update linter and fix linting issues #3

	name: codecov

	on:
	push:
	branches:
	- main
	pull_request:
	types:
	- opened
	- reopened
	- synchronize
	- ready_for_review

	jobs:
	codecov:
	timeout-minutes: 15

	services:
	pulsar:
	image: apachepulsar/pulsar-standalone:2.8.4
	ports:
	- 6650:6650
	- 8080:8080

	name: Coverage
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go 1.x
	uses: actions/setup-go@v4
	with:
	go-version: "1.21"
	id: go

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Get dependencies
	run: go version && go mod download

	# sleep to make sure that pulsar container is ready
	- name: Run tests with coverage
	run: sleep 20 && make test-integration-coverage

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v3
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: ./.testCoverage

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